Vehicle Hitch Wiring For - GMC - Terrain - 2010-2017 - w/Factory Tow Package, Replacement OEM Tow Package Wiring Harness (4-Flat) Quick and easy installation Solid, weatherproof, one-piece construction No cutting, splicing or taping Just plug in the T-Connector and you're ready to tow Simple do-it-yourself instructions on every package